Seam for sewed articles.



A. H. DE VOE.

SEAM FOR SEWED ARTICLES.

APPLICATION FILED IAN. 2. 1917.

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ATTORNEY vFACTURING. COMPANY, A CORPORATION vor NEW JERSEY.

sEAivi Eon sEwED ARTICLES.

To all whom it may concern.'

Be it known that I, ALBERT H. DE Vom a citizen of the United States, resldmg at Westfield, in the county of 'Union and State lof New Jersey, have invented certain new and useful Improvements in Scams for Sewed Articles, of which the following 1s a specification, reference being had therein to the accompanying drawings.

This invention relates to seams forsewed articles and'has for an object to provide a seam wherein upper and lower strips of material, such as tape, braid or the like, are secured together or to the top and bottom faces of intermediate material spaced rows of stitches disposed along the margins of said strips and so formed that the connecting thread-portions between adjacent penetrative thread-loop structures are hidden from view.

More particularly, the invention has for an object to provide a seam wherein upper and lower tapes are connected together' by 'marginally disposedrows of blind-stitches which may pass through intermediate material. 'i

A further object of the invention is to provide a seam wherein juxtaposed edgeportions of material are joinedand covered by upper andlower tapes connected togetherby marginally disposed rows of blindstitches passingA through said juxtaposed edge-portions.

Further objects of the invention will appear from the following description and claims.

These objects are attained by the improved seam structure which, in its preferred embodiment, comprises body-fabric material presenting juxtaposed edge-portions which are joined and covered by upper and lower tapes connected together by spaced rows of blind-stitches passing through said body- I views of modified seam-structures embody- Specification of Letters Patent. ,Patented Sept, 24, 1918, Application filed January 2, 1917. Serial No. 110,123'. I

ing the invention.

In the embodiment illustrated in Fig. 2, the seam comprises two juxtaposed edgeportionsa, b, of material', arranged in overla ping relation and including the inwardly fo ded portions o, rl, respectively.- Upper and lower tapes l and 2, respectively, cover the juxtaposed edge-portions a, b, andv are connected together by the spaced .rows of stitches 3, 3, formed within the marginal portions .4, 5, of said tapes and passing through the edge-portions a, l), of the intermediate material.

Each of the rows of stitches 3 comprises a series of keyed, penetrative thread-loop structures 6, each of which structures enters the inner or hidden surface of the upper tape 1 at the point 7, emerges from said surface at 8, passes downwardly through the juxtaposed edge-portions a, o, of the bodyfabric, enters the inner or hidden surface of the lower tape 2 at 9 and emerges from said surface at 10. In the present instance adjacent thread-loop structures 6 are connected together by the thread portions 11, 11, which 'UNTTED sTATEs PATENT OFFICE.

ALBERT H. DE VOE, 0F WESTFIELD, NEW JERSEY, ASSIGNOR T0 THE SINGER MANU- In the modification of the invention illusy by the usual presser-bar 13. The sole-portion 111 of the presser-foot 12 is formed with a tape-inverting edge 15 arranged substantially at right angles to the line of feed. As the work passes beneath the presserfoot the upper tape 1 is drawn forwardly through a suitable aperture 16 in the shank of the presser-foot and is inverted over the edge 15. The lower tape 2 is drawn forwardly through a passage-way 17 beneath the clotli-plate 18, through a guiding slot 19 in the usual four-motion feed-bar 2O and about the inverting edge 21 which forms the rear wall of a needle-receiving slot 22 cut in the auxiliary throat-plate 23. The lower inverting edge 21 is also disposed at substantially right angles to the line of feed and in the vertical plane of the upper inverting edge 15.

The stitch-forming mechanism comprises the reciprocating needle-bar 24 carrying a pair of eye-pointed needles 25, 25, which are disposed in a verticalplane at right angles to theline of feed and closely in front of the plane of the inverting edges 15 and '21. As the needles 25 descend they will split the bent portions of the tapes 1 and 2 which are presented by the inverting edges 15 and 21, respectively, and stitch said tapes together or to the opposite faces of the intermediate body-fabric material indicated at f in Fig. 1.

In the present instance a two-thread lockstitch example of keyed, penetrative, threadloop structure is shown, the keying being accomplished by the interlocking of the upper and lower threads at the point 26. The invention is not limited, however, to the use of a lock-stitch. Furthermore, in the embodiments illustrated, the location of the locking point 26 is immaterial.

Having thus set forth the nature of the invention, what I claim herein is 1. A seam for sewed articles comprising upper and lower.. plies of material and spaced rows of blind fastening stitches connecting said plies, each of said rows of stitches including a series of keyed, penetrative., tliread-loop structures which enter and emerge from the inner or hidden surfaces of said plies and are concealed at the outer or` visible surfaces of said plies.

2. seam for sewed articles comprising upper and lower tapes and spaced rows of blind fastening stitches connecting the marginal portions of said tapes, each of said rows of stitches including a series of keyed, penetrative thread-loop structures, each of said structures entering and emerging from the inner or hidden surfaces of said tapes without showing at the outer or visible surfaces thereof.

3. A seam for sewed articles comprising juxtaposed marginal portions of materia-i, upper and lower tapes covering said marginal portions, and spaced rows ofblind fastening stitches connecting said tapes alongy their margins, each of saidl rows of stitches including a series of keyed, penetrative thread-loop structures each entering and emerging from the inner or hidden surfaces of said tapes without showing at the outer oi` visible surfaces thereof and passing through the intermediate material.

4. A seam for sewed articles com risin two pieces of material having edge-portions dis osed in overla) in relation and means for securing said edge-portioiis together, said means comprising upper and lower ltapes extending along and covering the ALBERT H.l DE von. 

